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PLS-00320 the declaration of the type of this expression is incomplete or malformed

Cause: In a declaration, the name of a variable or cursor is misspelled or the declaration makes a forward reference. Forward references are not allowed in PL/SQL. A variable or cursor must be declared before it is referenced it in other statements, including other declarative statements. For example, the following declaration of dept_rec raises this exception because it refers to a cursor not yet declared:

DECLARE
dept_rec dept_cur%ROWTYPE;
CURSOR dept_cur IS SELECT ...
...

Action: Check the spelling of all identifiers in the declaration. If necessary, move the declaration so that it makes no forward references.